Finding the Fourth Proportional to 3,219.82, 4,800.89 and 3,161.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,219.82 : 4,800.89 = 3,161.50 : x
2. Step 2: Convert to fraction form
   3,219.82/4,800.89 = 3,161.50/x
3. Step 3: Cross multiply
   3,219.82x = 4,800.89 × 3,161.50
4. Step 4: Simplify right side
   3,219.82x = 15,178,013.74
5. Step 5: Solve for x
   x = 15,178,013.74/3,219.82
6. Step 6: Final answer
   x = 4,713.93